Composite cavitation jet nozzle for underwater cleaning robot

The utility model discloses a composite cavitation jet nozzle for underwater cleaning robot, including the nozzle main part, and the organ pipe section and the central body section that are arranged in the nozzle main part, the organ pipe section is provided with the inlet cavity, the resonant cavity and the communication channel that are communicated in order, the central body section includes the diffusion section, the central body cavity and the outlet section, the diffusion section is in a horn shape, and the central body cavity is located in the diffusion section and the outlet section. Periodic oscillation is formed through feedback oscillation of the resonant cavity to jet flow disturbance, the periodic oscillation can promote vortex of a shearing layer to become larger, stronger pulse fluid is formed, the fluid is enhanced to enter a central body cavity, low-pressure vortex areas are generated at the diffusion section and the outlet section, and the fluid flow is more uniform. The low-pressure vortex